Screening of Indonesian Medicinal Plant Extracts for Antibabesial Activity and Isolation of New Quassinoids from Brucea javanica
摘要:
Boiled extracts derived from 28 Indonesian medicinal plants were screened for their antibabesial activity against Babesia gibsoni in vitro. Of these extracts, the fruit of Brucea javanica was the most active in inhibiting parasite growth at a concentration of 10 mu g/mL. Bioassay-guided fractionation of the fruit extract of Br. javanica led to the isolation of two new quassinoids, bruceantinol B and bruceine J, and the structures of these compounds were elucidated on the basis of their spectroscopic data and by chemical transformation to known compounds. In addition, the known quassinoids bruceines A-D, bruceantinol, and yadanziolide A were isolated. Antibabesial activities were also examined in vitro, and bruceine A and bruceantinol were shown to be more potent than diminazene aceturate, a drug IC50 = 103 ng/mL) used clinically against B. gibsoni, with IC50 values of 4 and 12 ng/mL, respectively.
Quassinoid compositions for the treatment of cancer and other proliferative diseases
申请人:McChesney D. James
公开号:US20060281807A1
公开(公告)日:2006-12-14
The invention provides quassinoid compounds that are useful in treating cancer. The invention further provides a composition comprising a pharmaceutically suitable carrier and at least one compound of the invention, a method of killing a cancer cell, and a method of treating cancer in a mammal.
Conversion of Quassinoids for Enhancement of Inhibitory Effect against Epstein-Barr Virus Early Antigen Activation. Introduction of Lipophilic Side Chain and Esterification of Diosphenol.
Introduction of a senecioyl group into shinjulactones B and C, and esterification of the diosphenol moiety in brusatol and brucein A enhanced inhibitory effect against Epstein-Barr virus early antigen activation.
for obesity. Quassinoids are unique terpenes found in plants of the Simaroubaceae family, which were recently reported to have lipolytic activity and to suppress weight gain. Brucea javanica is a plant employed in traditional medicines in Asia, which is known to contain various quassinoids. Here, we investigated the lipolytic activity of B. javanica extracts, and identified six quassinoids: brucein A
Quassinoid analogs exert potent antitumor activity via reversible protein biosynthesis inhibition in human colorectal cancer
作者:Ning Wei、James Burnett、Desirae L. Crocker、Yixian Huang、Song Li、Peter Wipf、Edward Chu、John C. Schmitz
DOI:10.1016/j.bcp.2023.115564
日期:2023.6
HCA7BR, were equally sensitive to standard CRC therapeutic agents and known STAT3 inhibitors but resistant to homoharringtonine (HHT), a known protein synthesisinhibitor. The ability of quassinoids to inhibit protein synthesis was dependent on the structure of the C15 sidechain. Of note, BOL did not inhibit protein synthesis in normal human colon epithelial cells whereas HHT and napabucasin remained effective
Topical Compositions and Methods to Promote Optimal Dermal White Adipose Tissue Composition in Vivo
申请人:GALANIN Ivan
公开号:US20210401728A1
公开(公告)日:2021-12-30
Topical compositions and methods are provided that are effective for promoting an optimal composition of dermal white adipose tissue in vivo comprising an adipogenic agent, a retarder of lipogenesis or lipolytic agent and at least one penetrant.